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Thermal efficiency improvement method for heating furnace and thermal efficiency improvement device for heating furnace

A technology for heating furnaces and thermal efficiency, applied in the field of thermal efficiency improvement devices

Inactive Publication Date: 2013-07-10
UBE IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the cushion as a soft body also has the problem of whether it can withstand the mechanical impact and wear caused by high-temperature exhaust gas for a long time

Method used

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  • Thermal efficiency improvement method for heating furnace and thermal efficiency improvement device for heating furnace
  • Thermal efficiency improvement method for heating furnace and thermal efficiency improvement device for heating furnace
  • Thermal efficiency improvement method for heating furnace and thermal efficiency improvement device for heating furnace

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1）

[0217] Nonwoven fabric made of inorganic fibers containing Si, C, O, and Zr (fiber diameter 11 μm, fiber mass per unit area 240 g / m 2 , 95% volume porosity, containing 20% ​​by mass of rayon fibers as an example of chemical fibers, 500 mm in width, 5 mm in thickness, and 10 m in length) were cut to produce a base material of 500 mm in length and 500 mm in width. Then, the substrate is placed in a heat treatment furnace, and heat-treated at 800°C for 1 hour in an argon atmosphere to decompose and remove part of the rayon fibers contained in the substrate (nonwoven fabric) and carbonize the remaining part. , Remove the sizing agent (organic matter) applied on the substrate (the above is the first step).

[0218] Then, the heat-treated base material is entangled with two pieces of stainless steel wire mesh used as an anode electrode, and arranged on a solid solution oxide composed of Si and Zr elements selected from the first group—zircon (also called monosilicon). Zirconium aci...

experiment example 2）

[0228] From the non-woven fabric made of composite inorganic fibers made in Experimental Example 1, cut out 2 cloth members with a length of 60 mm, a width of 130 mm, and a thickness of 5 mm. According to the same procedure as in Experimental Example 1, as Figure 16 As shown, a radial aggregate in which the minimum crossing angle between fabric members is 45 degrees is formed. In addition, if Figure 17 As shown, at the positions of 0 degrees, 45 degrees, 180 degrees and 225 degrees in the circumferential direction of the base end of the cylinder, slits are formed along the axial direction of the cylinder respectively (the length of the slit is 130mm longer than the transverse dimension of the cloth member ), at the same time, form the mounting holes for bolts made of alumina at the 4th position along the circumferential direction of the front side of the cylindrical body, and form the holes for inserting the bolts made of alumina at the opposite position of the side part of ...

experiment example 3）

[0233] Nonwoven fabric made of inorganic fibers containing Si, C, O, and Zr (fiber diameter 11 μm, fiber mass per unit area 240 g / m 2 , 95% volume porosity, 20% by mass rayon fibers, 500mm width, 5mm thickness, and 10m length roll) cutting to produce a base material with a vertical length of 500 mm and a horizontal width of 500 mm. Then, the substrate is placed in a heat treatment furnace, and heat-treated at 800°C for 1 hour in an argon atmosphere to decompose and remove part of the rayon fibers contained in the substrate (nonwoven fabric) and carbonize the remaining part. , to remove the sizing agent applied on the substrate. Next, two nonwoven fabric test pieces of 60 mm in length, 130 mm in width, and 5 mm in thickness were cut out from the base material obtained after the heat treatment. In addition, plain weave fabrics made of inorganic fibers containing Si, C, O, and Zr (mass per unit area of ​​fibers 260 g / m 2 , opening ratio 29%, width 400mm, thickness 0.25mm, lengt...

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Abstract

A thermal efficiency improvement device (10) for a heating furnace is installed in an exhaust port (12) of the heating furnace and reduces heat to be discharged to the outside from the exhaust port (12), said thermal efficiency improvement device comprising one or multiple heat-resistant cloth members (15, 16) which are disposed in the exhaust port (12) along the flow of exhaust gas passing through the exhaust port (12) and heated by the exhaust gas, and support members (13, 14, 17, 18, 19) which secure the cloth members (15, 16) to the exhaust port (12), and reducing the heat to be discharged to the outside by putting radiant heat from the heated cloth members (15, 16) into the heating furnace. Thus, the thermal efficiency improvement device is installed in an exhaust port of an existing or new heating furnace, and reduces heat to be discharged from the exhaust port by putting radiant heat from a cloth member heated by exhaust gas into the heating furnace.

Description

technical field [0001] The present invention relates to, for example, being installed at the entrance of the exhaust port (including the exhaust port) of the heating furnace, heated by the exhaust gas passing through the exhaust port, reflecting the radiant heat from the heating furnace and returning to the heating furnace, thereby reducing A method for improving thermal efficiency of a heating furnace and a device for improving thermal efficiency of a heating furnace in which heat flows out from an exhaust port to the outside. Background technique [0002] The most significant heat loss in a gas combustion furnace or an atmosphere-controlled furnace is the heat loss brought by the high-temperature exhaust gas released to the outside through the exhaust port. Therefore, there are proposals to install a material with high heat radiation efficiency on the inner wall of the furnace (for example, refer to Patent Document 1), and to paste a silicon carbide-based non-woven fabric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D17/00
CPCF27D17/00F27D17/002F27D17/004Y02P10/25
Inventor 山村武民中川成人久行辉美松村义一
Owner UBE IND LTD
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